Rechippeb with vibrating trough



attorney 4 Sheets-Sheet l EINAR I. FLATEBOE E. I. FLATEBOE RECHIPPER WITH VIBRATING TROUGH Original Filed Oct. 17, 1949 May 5, 1953 y 5, 1953 I E. 1. FLATEBOE Re. 23,650

RECHIPPER WITH VIBRATING TROUGH Original Filed 'Oct. 17, 1949 4 Sheets-Sheet 2 3nuentor EINAR I. FLATEBOE Ciltotneg May 5, 1953 E. FLATE-BOE RECHIPPER wrm vmm'rxuc 'moucn Original Filed on. 17, 1949 4 Sheets-Sheet 3 Zhmentor E/NAR I. FLATEBOE atto'rneg 4 Sheets-Sheet 4 3nventor EINAR I; FLA TEBOE E. I. FLATEBOE RECHIPPER WITH VIBRATING TROUGH Original Filed Oct. 17, 1949 May 5, 1953 Reissued May 5, 1953 Re.

RECHIPPER WITH VIBRATING TROUGH Einar I. Flateboe, Everett, Wash., assignor to Sumner Iron Works, Everett, Wash., a corporation of Washington Original No. 2,582,537, dated January 15, 1952,

Serial No. 121,799, October 17, 1949.

Application for reissue November 3, 1952, Serial No.

Claims.

This invention relates to machines that are -tion, it will be here explained that in the chipping of wood bolts by present day high speed machines, as practiced in the paper pulp industry,

the operation results in the formation, along,

with the desired chips, of a certain quantity of slivers, strips and other pieces that are off size." It is not economical to waste this off size material since it comprises an appreciable percentage of the wood going through the chipper. Therefore, it has been a common practice to pass it again through the chipper. However, due to the character of the material, and since, to myknowledge, no practica1 means has been associated with present day chippers to line up the slivers and strips to cause them to be advanced endwise to the cutters as are the wood bolts, the rechipping operation has not been entirely satisfactory. Because of the promiscuous manner in which the pieces of 01f size material have been fed to the chipper, additional slivers and unusable pieces are just as apt to be produced therefrom, as not. It is only when the slivers or strips are chipped to short length that they are desirable for use in the making of pulp and this can only be accomplished by bringing the pieces of material into alignment for endwlse advancement to the chipper blades.

In view of the requirements as above set forth, it has been the principahobjeot of this invention to provide a. re-chipper, which may employ the usual form of chipper disk and knives, but which is characterized by a feeding hopper of novel form whereby the slivers, strips and other pieces of odd form, after being dumped thereinto in promiscuous order, by a vibratory action imparted to' the hopper will be automatically brought into alignment, compacted and fed endwise into the chipper and chipped thereby into pieces that are of the desired character for use in the making of pulp.

It is also anobject of this invention to provide 'a re-chlpper wherein the bringing of the prorniscuously'intermingled slivers and other pieces 'ofoiI size into alignment for the re-chipping operation ls efiected by use era downwardly m- Matter enclosed in heavy brackets I: appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue.

clined feeding hopper in the form of a V-shaped trough, equipped with means whereby it may be agitated or vibrated in such manner that the material placed therein for chipping is caused to automatically advance therealong for delivery into the chipper and the pieces automatically brought into alignment and compacted for advancement endwise into the path of travel-of the chipper blades.

It is also an object to provide a vibrating feed hopper with means of support so arranged that the vibratory action is gradually lessened toward the discharge end of I the hopper so as not to nullify the compacting action.

Further objects of the invention reside in the details of construction and combination of parts employed in the re-chipper and in its mode of operations, as will hereinafter be fully described.

In accomplishing these and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawings, wherein- Fig. l is a side view of a re-chipper embodying the improvements of the present invention therein.

Fig. 2 is a cross-section, taken on the line 2-2 in Fig. 1.

Fig. 3 is an end elevation of the machine.

Fig. 4 is a cross-section on the line 4-4, in Fig. l.

Fig. 5 is a top or plan view of the hopper.

Fig. 6 is an elevation of the hopper as seen from its discharge end.

Fig. 7 is a perspective view of the lower end portion of the hopper.

Fig. 8 is a side view of the spout and anvil by which the lower end of the feed hopper is supported.

Fig. 9 is a central vertical section of the spout and anvil, showing the application of the discharge end of the hopper thereto.

Fig. 10 is a cross-section taken on line l0lll in Fig. 9. i

Fig. 11 is an enlarged sectional detail of a tion of the anvil.

Referring more in detail to the drawings- For the present re-chipping operation I preferably employ a common type of Wood chipper, and equip it with a feed hopper that embodies the novel features of the present invention therein. As shown best in Fig. l, the re-chipper comprises a horizontal base structure, fabricated from channel iron members and comprising opposite side beams l0l0, joined in parallel, spaced re- 3 lationsh ip by gross members 12, Fixed upon the base ansv'ersely tnr qr anq at a location'substantially medially of its opposite ends, is a rectangular, open frame I3 within which the casing, or housing, M of the chipper is fixed, and in which housing a chipper ,dislc it? is for rotation by its drive shaft it. 'The rrame member I3 is suitably secured to the opposite side beams of the base structure by bolts i 1- passed through its corner portions.

The drive shaft l6 of the chipper enteritis hornzontally and lengthwise oft se i e revolvably mounted in bearings .lfirJS. that @113 formed on the rectangular frame I 3 at its opposite sides. It is operatively connected atone end,

supported by cross members Z P-ii as illustrated in Fig. 1.

Id, re

volyes a v-t rtiqa ane. it pl housing 14. .6 about its ope n s 25 ther a h tt qwie t a roper ngle. stee d t9 the d k by Earned s de w 1 1 1 a h i te rom e his; (and; 9.,fiIs a d1 ,a. b st. s onset-as 5.. throu h. l he ma t ial; o. b

sh nea t ted E ma he ho per. across an an and the. s ipper lin yosh relationship, of th anvi presently des rib d. t th pa h. o ravel at the. chipper knives s oh that th knives will coact therewith to cut int; '95. t1 times at materialthatate delivared or; advanc d intotheirpathoi travel.

The disk I5 is equipped on that side opposite thehladeswith a plurality ofradiall ndin fins 36 which operate as fan blades to draw air into the. housing IA. through. side. wall: openings Mx; and toexpel it through. the disahargespout 32, thus to convey the chips therewith to storage or pointofiuse.

The. novelty. of; the. present invention resides in the means for and manner of feeding, thef-ofie size materia i comprising-I. slivers, strips and pieces. of other form to the chipper. li'his willznowbe d'e-.- scribede The feed hoppenis. designated: in. its entirety by numeral 50. Preferably it is made of sheet metal, in theform of-a V-shaped troughand as applied'to the chipper, itis downwardly inclined to the receiving opening 35 inthe adjacent side wall of the chipperhousing. The hopper trough converges in width and decreases in depth its discharge end as" shown bestinTFigs. 5: and 6..

It is shown in Fig. 5 that the hOpperisof-substantial'width atitshigher end. At: its discharge end it leads into a short V-shaped extension, or spout, 502 the opposite side walls oi. which are setata lesser anglethan the angle cit-the outer end of'the trough. asthe. material moves down, the; hopper trough and. into. theextension, it. is. brought; into a more;v compact, mass. The hopper; is; mounted. upon a, rectangular, fabritran a 5.2:. that; xtends rom even. its

i e eml 9 e P n o conn c ion with the spout poptio l .9 and there is rigidly secured to a cross web 52x as seen in Fig. 7.

The hopper mounting frame 52 is resiliently supported at a location intermediate its ends by such means and in such manner that the vibratory action, presently described, for the automatic feeding-and aligning of the material, is reads possible.

At its lower end the feed hopper 50 is sup- DQIWQ by a 51 9. 11 fifithat is fixed upon the frame 13... closely adjacent the chipper housin and in alignment with the opening 35. The spout comprises a one piece casting, formed with a V- shaped trough-like and upwardly opening seat, in alignment with and directed downwardly toward the housing opening 35 as noted in Figs. 3 and .9.

Disposed in the V-shaped seat of the spout, and flatly against the opposite faces thereof as seeen P at .7% hiqlf tQEQthfiEfQ Ih is to h ch p er di k. 1 cuttin it the deshe. out r end 01? the. plates 5.6.; We tsndzi omewhat beyond th mai er nd. of: th troug and s veas. a supp rtin. h thesimn larlm haped, lowe end ortion. tflx fr e ee rou h 5:8. is rested: as. observed in Fi 9. The Wood m terial that is caused: to. be advanced downwardly in the hopper, trough. 5 m moves into the anvil trough and; thence. directly: intov the chipper for the ire-chippin operation. v

Asa feature of; the present construction, each anvil; plate isformedg on. its. underside. and at outer end with a lug. (iiltthatv is. aligned with. a notch 6 l; in the Outer;end edgeof thacorresponds ing. supporting. wall: of the spout. Also, each plate. has; a. bolt 62 fixed. therein. and": extended downwardly and through. a slot 63.fomnecliin; the supporting wall portion of thespout; in the Ion,- gitudinal direction of; the trough. These, bolts may. be tightened to hold-the innerend edges. 0-1 the plates in proper. relationship to the chipper blades, and'areloosened when plate adjustment is tobe made. Securement of the plates 5H6 is further effected by stud bolts 68 that arefixed the body portion on the spoutparallel-with its direction, and direction of the plates. 56'; These studs are passed. through holesinthe plate lugs 60; and are equipped atoppositesides smile lugs with locknuts-6 Srthat-may beadjjusted there on to e11 set the inward or outward? adjustment" of theplates and then-to"retainthe-adjustment'.

It is shown also in Fig. l l; that the anvil plates are faoed at their-innerendswithhard steel plates 3Q towithstand wear; and also, at their outer ends'have strips of material 68} such; asyrhbfer. tin set: he t ntu nr v nt' r r iqna xw n honntr n ttts The frames: which mounts. the. hppncr, ha xm sien. member, '1, fixe o is. liqwier nd QQ$iti9Il to proiec-a neath and; enga e witnt e sp ut nd; tareven t alaw r nd. of, a eaper r m i s t tted. pwar l nwardlv am; ts. as ut ma hs ma d nesi i nt a an q ib atm I and are bolted at their upper ends to the frame 52, but are independent in action.

The vibratory action of the hopper trough for the automatic feeding and aligning of material is effected by the following means:

Mounted across the underside of the frame structure 52 is a shaft 85, revolvable in bearings 86--B6 fixed to the opposite side members of said frame. Fixed on the shaftbetween the bearings, is an eccentric fly wheel 81 and on one The material to be re-chipped, comprising slivers, strips, etc., in promiscuous order is delivered into the higher end of the hopper trough, and the motor 90 set in motion to effect rotation of the cross shaft 85 at a substantially high rate. By reason of the eccentric 8'|,'a vibratory action of the hopper is thus set up andthis causes a gradual progression of the material toward the discharge end of the hopper. As the material advances, the slivers and pieces are caused to automatically move into alignment in the direction of the trough, and to be more and more compacted as they advance. The vibratory action which is quite pronounced at the outer end of the hopper becomes less pronounced in accordance with the lessening of the distance to the chipper due to the'fact that the discharge end of-the 1 hopper is rested in the anvil. Any disrupting of the compacted mass of material as it moves into the anvil trough is thus avoided. It is to be understood that there is no fixed connection between the lower end of the hopper and the anvil; and any slippage between the part 50x of the hopper and its support that is necessary can take place.

With the pieces of material aligned and compacted in this way, as they advance from'the anvil to the chipper blades, the chipping can be properly accomplished, thus making available for use, all the material which heretofore has been both difficult to handle and to effectively reduce.

Such machines may be made in size to meet requirements, and may employ chippers of the kind shown or of other types which are adapted to be fed from a hopper of the character embodied in this invention.

The material to be re-chipped and which may comprise pieces of sliver-like character, strips, block and other odd size pieces, will be referred to as reject material.

Having thus described my invention, what I claim as new there, and desire to secure by Letters Patent, is:

1. A re-chipper for reject material from a wood chipping operation comprising, in combination, a wood chipper having chipper blades and a rigidly mounted, inclined anvil of V-shaped trough-like form within which material to be rechipped is received and advanced to the chipper blades, a feed hopper in the form of a V-shaped trough, supported in a downwardly inclined position to receive said reject material thereinto at its higher end and to discharge it from its lower end into the higher end of the anvil; said hopper being slidably rested at its lower end in the anvil :trough and having a resilient means of support for its outer end, and power operated "means for causing a vibratory action of the hopper whereby an automatic advancement of contained material therealong is effected, and means fixedly supporting the anvil therein for longitudinal adjustment.

2. A re-chipper as recited in claim 1 wherein the anvil supporting means comprises a V-shaped trough-like spout that is fixed relative to the chipper and said anvil is supported by and is longitudinally adjustable in said spout'and extends beyond it at its lower end for coaction with lower end of the trough.

the chipper blades and is equipped with means for securing it in adjustment.

3. A re-chipper as recited in claim 1 wherein the trough-like spout is fixed relativ to the chipper and said anvil comprises complemental,

opposite side plates seated against'corresponding walls of the spout, each plate having a lug depending from its outer end and said lugs having holes therethrough, stud bolts fixed in the spout and extended through the holes of said lugs, and nuts threaded onto the studs to engage said lugs to effect and retain adjustment of the anvil plates.

4. A combination as recited in claim 1 wherein Y the means for effecting the vibratory action of the hopper comprises a cross shaft rotatably supported by the hopper from its higher end portion,

means for rotating the shaft and a Weight applied eccentrically to the shaft.

5. A re-chipper for reject material from a wood chipping operation comprising in combination, a wood chipper having chipping blades and an anvil of trough-like form within which material to be re-chipped is received and advanced to the chipper blades, a feed hopper in the form of a V-shaped trough, rested at its discharg end in the anvil trough to discharge material thereto, spring means supporting the hopper in a position downwardly inclined toward the anvil, an unbalanced rotary means supportedby the hopper at its outer end, means for rotating said unbalanced rotary means to cause a vibratory action of the hopper to be set up whereby material delivered into the hopper at its higher end for rechipping is caused to be advanced toward the lower end and the pieces thereof to be aligned and compacted as they advance; the angle formed by the opposite side walls of the trough being decreased gradually from the outer to the 6. A re-chipper for reject material from a wood chipping operation comprising, in combination, a wood chipper having chipping blades, a spout fixed adjacent the chipper, an anvil of trough-like form mounted in said spout and within which material to be re-chipped is received and advanced to the chipper blades, a downwardly inclined feed hopper in the form of a V-shaped trough, the side walls of which are laterally flared from the discharge end to the outer end, and the trough angle formed thereby being gradually decreased from the outer to the inner end of the hopper; said hopper being rested at its lower end in said anvil to deliver the material for re-chipping thereinto, and said hopper being equipped with a longitudinal supporting frame, an extension member at the lower end of the said frame engaged beneath the outer end of said spout to functionally retain the hopper end in the trough of the anvil, a cross shaft horizontally mounted by said frame near its outer end, an eccentric fly wheel on said shaft, means for rotating the shaft, and resilient means supporting the said frame intermediate its ends "ably suppereee for vfibmtwy action as induced law the rotation at sarifl 'flywheel.

=7. =A-reehipper far reieetmdterrialcompfiieing in combination, 'a shipper hav'ing chlinper Nudes 11nd enamel ef trough-lile e form disposed to receive reiect material [for its adz gan'cement =therein 'to rthe chipper blaiies a jeed. hopper in thejorm *oja v-shqped irough aligned. wiihifhe anvil, means fflf resiliently suppofiting 7h opper intermediate its end; in a floqmwardly inclined position for {the gram' tqt iana l advancement of reo'ect material, meeewed; therein et its higher end, to its lower end for -direct diseharge therefmm erg/t the anvil, and means operable tp impart vibratory movement to the hppper at its: @higher =end forjz zeilitaiing "the gmvi-taiiomil advqn'ce- -m e1 t anZZ the ieompyzet'z'ng pf the icoh'taineii $0,211, dj the reject materiel as it is advanced 'tol'ihe n e 1S A riee'h'ipper'formejee't rmdteridl eompriing m eoinbinatidn, a gmod chipper vhaving an eneiluof V-'-sh'aped, tmwghJike form and c'hipper blades arranged to coaet thereun'nfh. for Lthe climb ng -01 materz'zil advanced in the arw'il to the'blades, a

tapered, v shaped Jeed hopper of troufih l-ike form aligned with Tihe drieil to dz'shame reject were. i ir' ei yp fi drfi e lw afiplied eccevi tr iedlly lto 'the shdft forcazwing vi- 41m action hoj ihe ilzamzer whereby an, automatic advancemeri '12), contained maiterialptherealong is efiectefl and the pieces which ,curr zpr i'se ihe materiel uiilfbe caused Zto become dlzfgneii and compacteii as iihe imaterLiaTI advances "to the chipper.

v 10.. .A recfizipperjor reieet'imateririljrvm'wwaod dfiippin'g operation comprising in combin'cttion,..-a mood chipper "havmg hipping iblaiies an anvil acrdssw'hfidh materidlftobe reciliippedciz's'a'rivanced to the chipper Blades and a jeed hopper in "the of a V-shapewtraugih, supper-team 1m :in- (lirteii .po'sitibn ito receive :reiedt -materiul at lits *hii yker :end "and to it .f1'0m*its f'lowerend :ifcfdssfih'esflid anvi'lffor'eiiippmy by the chipper filadesfiandmeans for efiediny'u vibrritoryaeiion (if the inelinedhvzmer whereby an automabca'dvancement of the material therealongfis efieeted; "th'emigjle farmed bythe GMWSite-fiidwwfill-sflf the hopper trough being decreasedpmdually jmmthe ouier'toiiheiower enliiofthe trough. 

